Reproductive Structures in the Podocarpineae . 
81 
DESCRIPTION OF FIGURES IN PLATES V-IX. 
Illustrating Mr. Sinnott’s paper on the Podocarpineae. 
PLATE V. 
Fig. i. Podocarpus Totara. Archegonium at time of 'fertilization, showing fusion nucleus, 
second male nucleus, and prothallial nuclei. 
Fig. 2. P. ferrugineus . Mature archegonium and male cells, just before fertilization. 
Fig. 3 . Dacrydium Bidwillii . Mature archegonium sealed over by endosperm. 
Fig. 4. Podocarpus spicatus. Germinating pollen. 
Fig. 5. Dacrydium cupressinum. Microspore. 
Fig. 6. D. cupressinum. Mature pollen-grain with reduced wings. 
PLATE VI. 
Fig. 7. Podocarpus Totara. Longitudinal section of mature ovule, x 12. 
Fig. 8. P. nivalis. Transverse section of mature ovule, x 15. 
Fig. 9. P. Totara. Transverse section of receptaculum, with bract traces departing, x 15. 
Fig. 10. P. spinulosa. Longitudinal section of young strobilus. x 15. 
Fig. 11. P, vitiensis. Longitudinal section of young ovule, x 10. 
Fig. 12. P. dacrydioides. Longitudinal section of mature ovule, x 12. 
Fig. 13. P. dacrydioides. Longitudinal section of very young ovule, megaspore stage, x 20. 
Fig. 14. P. dacrydioides. Longitudinal section of young ovule, free nuclear stage, x 15. 
Fig. 15. P. ferrugineus. Longitudinal section of young ovule, x 8. 
Fig. 16. P. spicatus. Longitudinal section of young ovule and part of cone axis, x 9. 
Fig. 17. P. ferrugineus. Longitudinal section of very young ovule, just after spore germination, 
x 15. 
Fig. 18. P . ferrugineus. Transverse section of ovule, showing vascular girdles around nucellus 
from lateral bundles, x 10. 
PLATE VII. 
Fig. 19. P. spicatus. Transverse section of cone axis, supply to bract and ovule departing at 
left, x 30. 
Fig. 20. P. ferrugineus. Transverse section through very base of ovule, showing single trace 
to bract and two inverted bundles to epimatium. x 60. 
Fig. 21. Dacrydium Bidwillii. Longitudinal section of ovule, x 15. 
Fig. 22. D. Bidwillii. Transverse section through chalazal region, showing two bundles in 
epimatium and two departing from these into base of ovule, x 30. 
Fig. 23. D. intermedium. Longitudinal section of young ovule, entirely surrounded by 
epimatium. x 35. 
Fig. 24. D. cupressinum. Mature pollen-grain with reduced wings, x 700. 
Fig. 25. P. elatus. Megaspore mother-cell, x 160. 
Fig. 26. P. Totara. Small embryo-sac at free nuclear stage, surrounded by spongy tissue, 
x 60. 
Fig. 27. P. Totara. Young archegonium with ‘asteroids’ in central cell, x 60. 
Fig. 28. P. Totara. Mature archegonium. x 60. 
Fig. 29. P. Totara. Mature archegonium with persistent ventral canal nucleus, x 140. 
Fig. 30. P. Totara. Proembryo of four nuclei, x 160. 
Fig. 31. P. nivalis. Sixteen-celled proembryo with protective cellulose cap, just after wall 
formation, x 160. 
PLATE VIII. 
Fig. 32. P. Totara. Embryos from two archegonia, with suspensors just beginning to lengthen, 
x 120. 
G 
